renatsaf commented on issue #9423:
URL: https://github.com/apache/netbeans/issues/9423#issuecomment-4723870391
I looked into the GlassFish part of this. There's a concrete bug behind the
empty Java SE dropdown.
**Root cause:** NetBeans 30 bundles JDK 26. When JDK 26 support was added
(commit `a0d24844f`), only the `v26` constant was added to
`JavaSEPlatform.java` — the matching `<platform version="26"/>` entry was never
added to the GlassFish server config XMLs. So
`JavaUtils.findSupportedPlatforms()` intersects the installed JDKs with the
server's supported set (`{21..25}`), gets an empty result when JDK 26 is the
only registered platform, and `JavaSEPlatformPanel` shows the platform selector
with an empty dropdown and only a Cancel button. (The earlier "add JDK 24"
change, `1e42bf815`, correctly updated both the enum *and*
`GlassFishV8_0_0.xml`; the JDK 25 and 26 changes updated only the enum.)
**Fix:** #9445 adds `<platform version="26"/>` to the two current-gen
configs that already declare JDK 25 — `GlassFishV8_0_0.xml` and
`GlassFishV7_1_0.xml`.
**Workaround until that merges:** register a JDK 17–25 under *Tools → Java
Platforms*; the dropdown then populates and the server starts.
A couple of notes on the rest of the report:
- The WildFly symptom is almost certainly a *different* problem — WildFly
doesn't share this GlassFish/Payara code path, so a JDK 26 environment can hit
the more generic "no Java platform registered" case (common on Snap installs).
- The Payara configs look considerably more stale (e.g. `PayaraV7.xml` lists
only `<platform version="21"/>`), so Payara likely needs its own, larger config
update.
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